There is a problem with the inventory screen because Galacticraft changed it, and CustomNPCs uses the normal art for the inventory. Eventualy I might make the inventory screen on my own, but for now just deal with it.
Install Crumbling RPG
Step 1
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Step 2
Type in the modpack name (Crumbling RPG) or paste the following url into the search box.
Step 3
Finally, click Install at the bottom right of the launcher after you select Crumbling RPG from the list on the left. The launcher will handle everything else!